I think tonight's episode Sahil will argue abt his love for someone else (Rano) and refuse to marry Rashi and in anger probably blurt out his feelings for Rano. Everyone will be shocked and Sahil and Rano will decide to elope and take the consequences as it comes. Probably will end wid Sahil and Rano returning married.
Then on monday, everyone will start blaming Bani, but Jai will support her, and possibly Roshni might do as well but not so openly. Then Bani will get upset and be emotional wid Rano and yell at her for letting her down.
She'll then go to her room and probably cry a lot, which is when Jai will come and comfort her and then it'll probably lead to them consummating their marriage.
Shaheen